Merge .in files for css/svg properties into a single file

Source/build/scripts/scripts.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//third_party/WebKit/Source/config.gni")
 
 # All paths in this file should be absolute so targets in any directory can use
 # them without worrying about the current directory.
 _scripts_dir = "//third_party/WebKit/Source/build/scripts"
 
@@ skipping 98 matching lines @@
     if (defined(invoker.other_args)) {
       args += invoker.other_args
     }
 
     deps = make_core_generated_deps
   }
 }
 
 # Template to run the make_names script. This is a special case of
 # process_in_files.
+#   outputs: expected results
+template("css_properties") {
+  process_in_files(target_name) {
+    script = "//third_party/WebKit/Source/build/scripts/make_names.py"
+    in_files = invoker.in_files
+    other_inputs = invoker.other_inputs
+    outputs = invoker.outputs
+  }
+}
+
+# Template to run the make_names script. This is a special case of
+# process_in_files.
 #   in_files: files to pass to the script
 #   outputs: expected results
 template("make_names") {
   process_in_files(target_name) {
-    script = "//third_party/WebKit/Source/build/scripts/make_names.py"
-    in_files = invoker.in_files
+    script = invoker.script
+    in_files = ["CSSProperties.in"]
     other_inputs = make_names_files
     outputs = invoker.outputs
     other_args = [ "--defines", feature_defines_string ]
   }
 }
 
 # Template to run the make_qualified_names script. This is a special case of
 # process_in_files.
 #   in_files: list of ".in" files to process.
 #   outputs: list of output files
@@ skipping 32 matching lines @@
 
     args = [
       rebase_path(invoker.input_file, root_build_dir),
       rebase_path(invoker.output_file, root_build_dir),
     ]
 
     deps = make_core_generated_deps
   }
 }